High-frequency quenching equipment

Abstract

The invention provides high-frequency quenching equipment which comprises a quenching cavity, and a heating pipe is arranged in the quenching cavity. A waterproof cover is further arranged in the quenching cavity and is in a spherical shape, and a diagonal plane opening is formed in the upper portion of the waterproof cover. The metal workpiece is placed in the waterproof cover, and the heating pipe extends into the waterproof cover from the back of the waterproof cover and sleeves the outer side of the metal workpiece for heating; the waterproof cover is composed of a shell and an absorption plate, and the absorption plate is of a honeycomb structure and buffers and absorbs water flow ejected by impacting the metal workpiece. An air suction hole used for absorbing water vapor is formed in the back of the shell, is in a necking shape and is connected with external air extraction equipment through an air pipe. According to the high-frequency quenching equipment, the absorption plate and the air suction holes connected with external air exhaust equipment are arranged, so that the problem that the environment in the quenching cavity is humid due to water flow ejection and water vapor evaporation when the high-frequency quenching equipment is used for quenching a heated metal workpiece is solved.

Description

Technical Field

[0001] The invention relates to the technical field of heat treatment, in particular to a high-frequency quenching device. Background Art

[0002] High-frequency quenching refers to a heat treatment method that uses high-frequency current (30K-1000KHZ) to locally heat and cool the surface of the workpiece to obtain a surface hardened layer. This method only strengthens the surface of the workpiece to a certain depth, while the core basically maintains the structure and performance before treatment, so it can obtain a combination of high strength, high wear resistance and high toughness. Because it is local heating, it can significantly reduce quenching deformation and reduce energy consumption. It is precisely because of the above characteristics of high-frequency quenching that it is widely used in the mechanical processing industry.

[0003] In the process of heat treatment such as forging and casting, the heated metal workpiece is often cooled quickly by high-pressure water spraying to achieve the purpose of quenching. However, during the quenching process, the water flow will hit the metal workpiece and cause ejection, and the water flow will vaporize water vapor when it encounters heat, which makes the environment in the entire quenching chamber extremely humid. Since the equipment has a metal inner wall and needs to be powered when working, it may corrode the equipment and there is a greater safety hazard of leakage. Summary of the invention

[0004] The purpose of the present invention is to provide a high-frequency quenching device, which can solve the problem of humid environment caused by the high-frequency quenching device when quenching a heated metal workpiece.

[0005] The objective of the present invention is achieved through the following technical solutions: A high-frequency quenching device includes a quenching chamber, in which a heating tube is arranged. A waterproof cover is also arranged in the quenching chamber, and the waterproof cover is spherical, and an opening with a chamfered surface is arranged on the upper part. A metal workpiece is placed in the waterproof cover, and the heating tube extends from the back of the waterproof cover into the interior, and is sleeved on the outer side of the metal workpiece for heating; the waterproof cover is composed of a shell and an absorption plate, and the absorption plate is a honeycomb structure, which buffers and absorbs the water flow ejected by hitting the metal workpiece; the back of the shell is provided with an air intake hole for absorbing water vapor, and the air intake hole is in a constricted shape, and is connected to an external exhaust device through an air pipe.

[0006] Preferably, an adjustment door is provided on the back of the housing.

[0007] Preferably, the adjustable door comprises an upper storage cabinet, a lower storage cabinet and two door panels, wherein the two door panels are respectively installed inside the upper storage cabinet and the lower storage cabinet. Springs are arranged inside the upper storage cabinet and the lower storage cabinet, and the two door panels are pressed against each other by the elastic force of the springs.

[0008] Preferably, two semicircular grooves for inserting the heating tube are provided on one side where the two door panels are pressed against each other. When the two door panels are pressed against each other, the two corresponding semicircular grooves merge into a circular hole, and the heating tube passes through the circular hole into the waterproof cover.

[0009] Preferably, the storage space of the upper storage cabinet and the lower storage cabinet is sufficient to store the entire door panel. The minimum distance between the upper storage cabinet and the lower storage cabinet is greater than the length of the metal workpiece.

[0010] Preferably, an opening is provided on the back of the absorption plate, and the size and position of the opening correspond to the size and position of the adjustment door.

[0011] Preferably, a support block is provided at the inner bottom of the waterproof cover, and a groove for placing a metal workpiece is provided at the top of the support block.

[0012] Preferably, a fixing plate fixed to the bottom of the quenching chamber is provided at the outer bottom of the waterproof cover.

[0013] Preferably, a drain pipe is connected to the bottom of the shell, one end of the drain pipe extends to the inside of the shell, and the other end extends to the outside of the quenching chamber.

[0014] Preferably, a plurality of wall nails for fixing the absorption plate are arranged on the inner wall of the shell.

[0015] Preferably, there is a gap of 0.5-2 cm between the shell and the absorption plate.

[0016] Preferably, a control box is also included to control the power on and off of the heating tube.

[0017] Compared with the prior art, the advantages of this application are as follows: The present invention provides a honeycomb structured absorption plate to buffer and absorb water droplets ejected after water flow hits a metal workpiece. In addition, the air intake hole provided on the back of the shell is connected to an external air extraction device to guide the water vapor and gas in the waterproof cover to move toward the air intake hole and transmit it to the outside of the high-frequency quenching equipment to avoid creating a humid quenching chamber environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a high-frequency quenching equipment of the present invention.

[0019] Figure 2 for Figure 1 Side view of the middle waterproof cover.

[0020] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the waterproof cover.

[0021] Figure 4 for Figure 3Front view of the center adjustment door.

[0022] The following are the descriptions of the reference numerals: 1: quenching chamber, 2: waterproof cover, 3: control box, 11: heating tube, 21: chamfered opening, 22: shell, 23: absorption plate, 24: support block, 25: fixing plate, 221: suction hole, 222: adjustment door, 223: drainage pipe, 224: wall nail, 231: opening, 241: groove, 2221: upper storage cabinet, 2222: lower storage cabinet, 2223: door panel, 2224: spring. DETAILED DESCRIPTION

[0023] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0024] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand the advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0025] Embodiment 1

[0026] The present invention provides a honeycomb structured absorption plate 23 to buffer and absorb water droplets ejected after water flow hits the metal workpiece. In addition, the air intake hole 221 provided on the back of the shell 22 is connected to an external air extraction device to guide the water vapor and gas in the waterproof cover 2 to move toward the air intake hole 221 and transmit it to the outside of the high-frequency quenching equipment to avoid creating a humid quenching chamber 1 environment.

[0027] Figure 1-2 As shown, a high-frequency quenching device includes a quenching chamber 1, in which a heating tube 11 is arranged. A waterproof cover 2 is also arranged in the quenching chamber 1, and the waterproof cover 2 is spherical, and a chamfered opening 21 is arranged on the upper part. The advantage of the spherical structure is that it has strong wrapping, and its wrapping area and angle are large. The chamfered opening 21 is that the boundaries of the opening are all located on a plane.

[0028] The metal workpiece is placed in the waterproof cover 2, and the heating pipe 11 extends from the back of the waterproof cover 2 into the interior and is set on the outside of the metal workpiece for heating. During this process, the heating pipe 11 slowly moves from top to bottom along the metal workpiece to heat it. During the heating process, a water pipe and a nozzle are set in the waterproof cover 2, which are not shown in the figure, to cool the heated metal workpiece.

[0029] The waterproof cover 2 is composed of a shell 22 and an absorption plate 23. The absorption plate 23 is a honeycomb structure, which buffers and absorbs the water flow ejected by hitting the metal workpiece; the back of the shell 22 is provided with an air intake hole 221 for absorbing water vapor. The air intake hole 221 is in a constricted shape and is connected to an external exhaust device through an air pipe.

[0030] Furthermore, a control box 3 is included to control the power on and off of the heating tube 11. A button is provided on the control box 3 to control the power on and off of the heating tube 11.

[0031] like Figure 3-4 As shown, further, an adjustment door 222 is provided at the back of the shell 22. The function of the adjustment door 222 is to prevent water droplets and water vapor from being discharged from the back of the shell 22 while cooperating with the heating tube 11 to move from top to bottom, causing the quenching chamber 1 to have a humid environment.

[0032] Further, the adjusting door 222 includes an upper storage cabinet 2221, a lower storage cabinet 2222 and two door panels 2223, and the two door panels 2223 are respectively installed inside the upper storage cabinet 2221 and the lower storage cabinet 2222. Springs 2224 are provided inside the upper storage cabinet 2221 and the lower storage cabinet 2222, and the two door panels 2223 are squeezed against each other by the elastic force of the springs 2224. In a static state, the springs 2224 are in an extruded state, pushing the two door panels 2223 to squeeze against each other. During the upward movement of the heating tube 11, the door panel 2223 in the upper storage cabinet 2221 is pushed up, the spring 2224 in the upper storage cabinet 2221 is squeezed and contracted, and the door panel 2223 in the lower storage cabinet 2222 is pushed upward by the elastic force of the spring 2224 in the lower storage cabinet 2222, thereby ensuring that the two door panels 2223 are in a closed state.

[0033] Furthermore, two semicircular grooves 22231 for inserting the heating tube 11 are provided on the side where the two door panels 2223 are squeezed against each other. When the two door panels 2223 are squeezed against each other, the two corresponding semicircular grooves 22231 are merged into a circular hole, and the heating tube 11 passes through the circular hole into the waterproof cover 2.

[0034] Furthermore, the storage space of the upper storage cabinet 2221 and the lower storage cabinet 2222 is sufficient to store the entire door panel 2223. The minimum distance between the upper storage cabinet 2221 and the lower storage cabinet 2222 is greater than the length of the metal workpiece, ensuring that the heating tube 11 can quench and heat the complete metal workpiece.

[0035] Furthermore, an opening 231 is provided on the back of the absorption plate 23, and the size and position of the opening 231 correspond to the size and position of the adjustment door 222, ensuring that it can enter the waterproof cover 2 and have a sufficient range to move up and down.

[0036] Furthermore, a support block 24 is provided at the inner bottom of the waterproof cover 2, and a groove 241 for placing the metal workpiece is opened on the top of the support block 24. The function of the groove 241 is to fix the metal workpiece so that it can remain firmly in an upright state during the quenching process. The specific shape of the groove 241 can be set according to the structure of the metal workpiece to ensure that the metal workpiece can be stably placed.

[0037] Furthermore, a fixing plate 25 fixed to the bottom of the quenching chamber 1 is provided at the outer bottom of the waterproof cover 2 for fixing the waterproof cover 2, and the fixing method may be welding or bolt fixing.

[0038] Furthermore, a drain pipe 223 is connected to the bottom of the shell 22. One end of the drain pipe 223 extends to the inside of the shell 22, and the other end extends to the outside of the quenching chamber 1. The water in the shell 22 is led out of the outside of the quenching chamber 1 to avoid causing a humid environment.

[0039] Furthermore, a plurality of wall nails 224 for fixing the absorption plate 23 are arranged on the inner wall of the housing 22. The absorption plate 23 can be directly plugged into the wall nails 224, or a plug hole can be arranged to connect with the wall nails 224.

[0040] Furthermore, there is a gap of 0.5-2 cm between the shell 22 and the absorption plate 23. The function of the gap is to enable the air intake hole 221 to absorb the gas between the shell 22 and the absorption plate 23, so that the shell 22 and the absorption plate 23 are in a negative pressure state, so that the absorption plate 23 can absorb the airflow in the waterproof cover 2 over a larger area, so that the flow direction of the steam can be effectively controlled.

[0041] Working principle: The staff puts the metal workpiece through the heating tube 11 and places it in the groove 241 to fix it. Then press the button on the control box 3, and the heating tube 11 is energized; the heating tube 11 heats the metal workpiece from top to bottom. During the heating process, the nozzle in the waterproof cover 2 sprays water to the metal workpiece. The water rises rapidly at high temperature, and part of it becomes water droplets and is ejected onto the absorption plate 23, and the other part becomes water vapor floating in the air. When the water droplets are ejected onto the absorption plate 23, the holes on the absorption plate 23 buffer and absorb them. The water droplets flow down along the absorption plate 23 to the bottom of the shell 22 and are discharged from the drain pipe 223 to the outside of the high-frequency quenching equipment. The water vapor floats in the waterproof cover 2, and the external exhaust device extracts the water vapor and air from the position of the suction hole 221 to the outside of the high-frequency quenching equipment. As a result, the internal environment of the quenching chamber 1 remains dry, reducing the corrosion degree of the high-frequency quenching equipment and avoiding the safety hazard of leakage.

[0042] In the description of the present invention, it is necessary to understand that the terms "middle", "length", "up", "down", "front", "back", "vertical", "horizontal", "inside", "outside", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, the first feature "on" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. "Multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The above is only for explaining the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention without creative work should be included in the protection scope of the present invention.

Claims

1. A high-frequency quenching device, comprising a quenching chamber (1), wherein a heating tube (11) is arranged in the quenching chamber (1); characterized in that: A waterproof cover (2) is also provided in the quenching chamber (1). The waterproof cover (2) is spherical and has an oblique cut opening (21) on its upper portion. The metal workpiece is placed in the waterproof cover (2). The heating pipe (11) extends from the back of the waterproof cover (2) into the interior and is sleeved on the outer side of the metal workpiece for heating. The waterproof cover (2) is composed of a shell (22) and an absorption plate (23). The absorption plate (23) is a honeycomb structure that buffers and absorbs water flow ejected by impacting the metal workpiece. An air intake hole (221) for absorbing water vapor is provided on the back of the shell (22). The air intake hole (221) is in a constricted shape and is connected to an external air extraction device via an air pipe.

2. The high-frequency quenching equipment according to claim 1, characterized in that: An adjustment door (222) is provided at the back of the housing (22).

3. The high-frequency quenching equipment according to claim 2, characterized in that: The adjustable door (222) comprises an upper storage cabinet (2221), a lower storage cabinet (2222) and two door panels (2223), wherein the two door panels (2223) are respectively installed inside the upper storage cabinet (2221) and the lower storage cabinet (2222); springs (2224) are arranged inside the upper storage cabinet (2221) and the lower storage cabinet (2222), and the two door panels (2223) are pressed against each other by the elastic force of the springs (2224).

4. The high-frequency quenching equipment according to claim 3, characterized in that: Two semicircular grooves (22231) for inserting the heating tube (11) are provided on the side where the two door panels (2223) are pressed against each other. When the two door panels (2223) are pressed against each other, the two semicircular grooves (22231) corresponding to each other merge into a circular hole, and the heating tube (11) passes through the circular hole and enters the waterproof cover (2).

5. The high-frequency quenching equipment according to claim 3, characterized in that: The storage space of the upper storage cabinet (2221) and the lower storage cabinet (2222) is sufficient to store the entire door panel (2223); and the minimum distance between the upper storage cabinet (2221) and the lower storage cabinet (2222) is greater than the length of the metal workpiece.

6. The high-frequency quenching equipment according to claim 2, characterized in that: An opening (231) is provided on the back of the absorption plate (23), and the size and position of the opening (231) correspond to the size and position of the adjustment door (222).

7. The high-frequency quenching equipment according to claim 1, characterized in that: A support block (24) is provided at the inner bottom of the waterproof cover (2), and a groove (241) for placing a metal workpiece is provided at the top of the support block (24).

8. The high frequency quenching equipment according to claim 1, characterized in that: A fixing plate (25) fixed to the bottom of the quenching chamber (1) is provided on the outer bottom of the waterproof cover (2).

9. The high-frequency quenching equipment according to claim 1, characterized in that: A drainage pipe (223) is connected to the bottom of the shell (22); one end of the drainage pipe (223) extends to the inside of the shell (22), and the other end extends to the outside of the quenching chamber (1).

10. The high-frequency quenching equipment according to claim 1, characterized in that: A plurality of wall nails (224) for fixing the absorption plate (23) are arranged on the inner wall of the shell (22).

11. The high frequency quenching equipment according to claim 1, characterized in that: There is a gap of 0.5-2 cm between the housing (22) and the absorption plate (23).

12. The high-frequency quenching equipment according to claim 1, characterized in that: It also includes a control box (3) for controlling the power on and off of the heating tube (11).

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